Unhandled exception:
Exception type: System.ServiceModel.FaultException`1[Microsoft.Xrm.Sdk.OrganizationServiceFault]
Message: The e-mail must have at least one recipient before it can be sentDetail:
<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts">
<ActivityId>55e4989e-30ac-4540-a9ee-52b51dfe41fb</ActivityId>
<ErrorCode>-2147220891</ErrorCode>
<ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic">
<KeyValuePairOfstringanyType>
<d2p1:key>OperationStatus</d2p1:key>
<d2p1:value xmlns:d4p1="www.w3.org/.../XMLSchema" i:type="d4p1:string">0</d2p1:value>
</KeyValuePairOfstringanyType>
<KeyValuePairOfstringanyType>
<d2p1:key>SubErrorCode</d2p1:key>
<d2p1:value xmlns:d4p1="www.w3.org/.../XMLSchema" i:type="d4p1:string">-2146233088</d2p1:value>
</KeyValuePairOfstringanyType>
</ErrorDetails>
<HelpLink>go.microsoft.com/.../
<Message>The e-mail must have at least one recipient before it can be sent</Message>
<Timestamp>2020-03-11T15:52:39.4282946Z</Timestamp>
<ExceptionRetriable>false</ExceptionRetriable>
<ExceptionSource i:nil="true" />
<InnerFault i:nil="true" />
<OriginalException i:nil="true" />
<TraceText>
[Microsoft.Crm.ObjectModel: Microsoft.Crm.ObjectModel.WorkflowEventPlugin]
[3844d008-ef45-413a-a8b0-549bb10046b9: WorkflowEventPlugin]
Entered Microsoft.Dynamics.Sales.Plugins.PreOperationBpfInstanceUpdate.Execute(), Correlation Id: 3497032f-dd16-450f-b178-892b91c4c050, Initiating User: 8ad25525-7b2a-e711-80ff-5065f38bd451
Exiting Microsoft.Dynamics.Sales.Plugins.PreOperationBpfInstanceUpdate.Execute(), Correlation Id: 3497032f-dd16-450f-b178-892b91c4c050, Initiating User: 8ad25525-7b2a-e711-80ff-5065f38bd451
[Microsoft.Crm.ObjectModel: Microsoft.Crm.Extensibility.InternalOperationPlugin]
[46f6cf4c-14ae-4f1e-98a1-eae99a37e95c: ExecuteWorkflowWithInputArguments]
Starting sync workflow 'QMS L4 Approval Request', Id: 83b2b333-eb41-ea11-a812-000d3a218199
Sync workflow 'QMS L4 Approval Request' terminated with error 'The e-mail must have at least one recipient before it can be sent'
[Microsoft.Crm.ObjectModel: Microsoft.Crm.ObjectModel.SyncWorkflowExecutionPlugin]
[48e78e9d-bf33-ea11-a813-000d3a219518: ]
Starting sync workflow 'QMS Action - Send email to L4 Approver', Id: 31e78e9d-bf33-ea11-a813-000d3a219518
Entering SendEmailStep1_step:
Sync workflow 'QMS Action - Send email to L4 Approver' terminated with error 'The e-mail must have at least one recipient before it can be sent'
</TraceText>
</OrganizationServiceFault>